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Finding the Fourth Proportional to 228,879, 315,856.83 and 126,908.74

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Solution

The fourth proportional to 228,879, 315,856.83 and 126,908.74 is: 175,136.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,879 : 315,856.83 = 126,908.74 : x
  2. Step 2: Convert to fraction form
    228,879/315,856.83 = 126,908.74/x
  3. Step 3: Cross multiply
    228,879x = 315,856.83 × 126,908.74
  4. Step 4: Simplify right side
    228,879x = 40,084,993,186.42
  5. Step 5: Solve for x
    x = 40,084,993,186.42/228,879
  6. Step 6: Final answer
    x = 175,136.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.